When you apply for an Indonesian visa, you have to submit several documents to the Embassy/Consulate so they can process your application. The Indonesia visa requirements change depending on the type of visa you need, how you are applying, and even what country you are from.
What is proof of payment of the Indonesia visa fee?
Since there is no single acceptable way to pay the Indonesia visa fee, the proof of payment will depend on the Embassy/Consulate and whether you are by mail or in person. You can usually find instructions about the payment method on their websites. Sometimes you have to purchase a Money Order, and other times you can pay via your Credit or Debit Card.
Note: The visa fees are subject to change, based on new immigration rules as well as the country in which you apply.